Makaton is an augmentative and alternative communication (AAC) system which uses signs (hand gestures) and symbols (images) alongside speech & written words to support communication. Despite its use of signs, Makaton is not a sign language.

Makaton is used by hearing people with communication challenges and learning disabilities to communicate and supports the development of essential communication skills such as attention, listening, comprehension, memory and expressive speech and language. The Makaton language programme has been used with individuals who have cognitive impairments, autism, Down syndrome, specific language impairment, multisensory impairment and acquired neurological disorders that have negatively affected the ability to communicate, including stroke and dementia patients.

The name "Makaton" is derived from the names of three members of the original teaching team at Botleys Park Hospital in Chertsey, Surrey: Margaret Walker (the designer of the programme and speech therapist at Botleys Park), Katherine Johnston and Tony Cornforth (psychiatric hospital visitors from the Royal Association for Deaf People).

Makaton is a registered trademark of The Makaton Charity, which was established in 2007 to replace the original charitable trust, the Makaton Vocabulary Development Project, established in 1983. The original trademark application for Makaton was filed in Britain on 28 August 1979, with registration approved as from that date under trademark registration no. 1119745.

The Makaton Language Programme uses a multimodal approach to teach communication, language and, where appropriate literacy skills, through a combination of speech, signs, and graphic symbols used concurrently, or, only with speech with signs, or, only with speech with graphic symbols as appropriate for the student's needs. It consists of a Core Vocabulary of roughly 450 concepts that are taught in a specific order (there are eight different stages). For example, stage one involves teaching vocabulary for immediate needs, like "eat" and "drink".

Later stages contain more complex and abstract vocabulary such as time and emotions. Once basic communication has been established, the student can progress in their language use, using whatever modes are most appropriate. Also, although the programme is organised in stages, it can be modified and tailored to the individual's needs. In addition to the Core Vocabulary, there is a Makaton Resource Vocabulary of over 11,000 concepts which are illustrated with signs and graphic symbols.

Original research was conducted by Margaret Walker in 1972/73, and resulted in the design of the Makaton Core Vocabulary based on functional need. This research was conducted with institutionalised deaf cognitively impaired adults resident at Botleys Park Hospital in Chertsey, Surrey (which closed in 2008). The aim was to enable them to communicate using signs from British Sign Language. Fourteen deaf and cognitively impaired adults participated in the pilot study, and all were able to learn to use manual signs; improved behaviour was also noted. Shortly after, the Core Vocabulary was revised to include both children and adults with severe communication difficulties (including individuals who could hear), and was used in many schools throughout Britain in order to stimulate communication and language.

In the early stages of development, Makaton used only speech and manual signs (without symbols). By 1985, work had begun to include graphic symbols in the Makaton Language Programme and a version including graphic symbols was published in 1986. The Core Vocabulary was revised in 1986 to include additional cultural concepts.